Electrodeposition and magnetic properties of CoxDy1−x nanotube arrays. (1st September 2022)

• Record Type: Journal Article
• Authors: Duan, Xinke; Wang, Yaosheng; Bao, Lingbo; Zhou, Wenping; Bai, Narsu; Yun, Guohong
• Is Part Of: Applied physics express. Volume 15:Number 9(2022)
• Publication Date: 2022-09-01
• Subjects: magnetic nanotube arrays -- anodic aluminum oxidation template -- electrochemical deposition -- rare-earth alloy -- micromagnetic simulation; Physics -- Periodicals; Technology -- Periodicals; 621.05
• DOI: 10.35848/1882-0786/ac8638
• Languages: English
• ISSNs: 1882-0778

Abstract

Abstract: Well-ordered Co x Dy1− x nanotubes are electrodeposited into self-made anodic aluminum oxidation templates under different potentials. The composition of Co x Dy1− x alloy nanotubes can be tuned by deposition potentials. The deposited Co x Dy1− x alloy nanotubes are amorphous, however, there appears a diffraction peak corresponding to Co7 Dy2 in the sample annealed at 600 °C. The easy magnetization direction is always along the longitudinal axis of arrays for all samples. Dysprosium alloying significantly increases the coercivity of Co x Dy1− x nanotubes in comparison with Co nanotubes. By using the hybrid Monte Carlo micromagnetic method, the exchange stiffness constant of Co7 Dy2 nanotubes can be conveniently estimated to be 8.0 × 10 −11 J m −1 .